If 72 grams of magnesium react how many of hydrogen are produced

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter